I tried doing that, it helped but did not completely fix the issue. I exported with these changes:
When imported into UE4, I selected these settings:
This created a lot of content:
That image also shows, on the right, the static mesh version of the base of the safe when the material is applied, and on the left one of the content items containing the base from the new import. No animations play in game even when the looping and playing options are set. The skeletal mesh version of the base seems to have weird streaks over it which I am not sure about.
Thank you for the help so far, it is appreciated.